40605125123 has 2 divisors, whose sum is σ = 40605125124. Its totient is φ = 40605125122.

The previous prime is 40605125101. The next prime is 40605125137. The reversal of 40605125123 is 32152150604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40605125123 - 2¹⁰ = 40605124099 is a prime.

It is not a weakly prime, because it can be changed into another prime (40605125173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20302562561 + 20302562562.

It is an arithmetic number, because the mean of its divisors is an integer number (20302562562).

Almost surely, 2^40605125123 is an apocalyptic number.

40605125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40605125123 is an equidigital number, since it uses as much as digits as its factorization.

40605125123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 40605125123 its reverse (32152150604), we get a palindrome (72757275727).

The spelling of 40605125123 in words is "forty billion, six hundred five million, one hundred twenty-five thousand, one hundred twenty-three".